There are several SMPs that have very high success rates in putting their students straight into med school, no gap year, either at the host MD school or at another MD/DO school.
There are no SMPs, to my knowledge, that allow you to go straight to 2nd year. In some cases you may not need to repeat M1 coursework that you high passed or honored during the SMP. If you don't go to the host med school, then you'd have to petition to get out of anything you high passed or honored. In no cases (afaik) can you skip out on M1 tuition or the coursework that's not included in the SMP. (SMPs don't generally include the clinical aspects of M1.)
Best of luck to you.